Mironovich, L. M., P. V. Afanas’yev, and A. Y. Podol’nikova. “SYNTHESIS OF 3-TERT-BUTYL-9-R-PYRIMIDO[4,5:3,4]PYRAZOLO[5,1-C][1,2,4]TRIAZINE-4(6H),11(10H)- DIONES AT CONDITIONS OF MICROWAVE RADIATION”. ChemChemTech, Vol. 59, no. 3, July 2018, pp. 74-77, doi:10.6060/tcct.20165903.5252.